Tire-deflating machine



H. P. KRAFT.

.TIRE DEFLATING MACHINE.

APPLICATION EILED'OCT. 14. 1918. RENEWED JULY 2.1921.

1,405,230, Patented Jan.31,1'922.

. By A tiorneys,

UNETEE STATES smear a rspace.

HENRY r. KRAFT, or BIDG-EWOOD, NEW JERSEY, nssrcn'on TO A. SCHRADERS so INCORPORATED, or BROOKLYN, NEW YORK, A CORPORATION on NEW YORK.

TIRE-DEFLATING MACHINE.

Specification of Letters Patent.

A plication filed October 14, 1918, Serial No. 258,078. Renewed July 2, 1921. Serial No. 482,191.

T 0 all whom it may concern:

Be it known that I, HENRY P. KRAFT, a citizen of the United States of America, residing in Ridgewood, in the county of Bergen and Stateof New Jersey, have invented certain new and useful Improvements in Tire-Deflating Machines, of which the following is a specification. I j

This invention relates to a tire deflating machine, and has for its primary object to provide mechanism for quickly withdraw ng air from a pneumatic tire, and maintaining it in proper position during such operation. In the manufacture of a pneumatic tire or tube, it is difficult to expel all of the fluid contents after manufacture and inspection,

and preparatory'to marketing, because of its flexible nature and tendency to twist and buckle, and one of the objects of this improvement is to support the the in such a manner as to accomplish this in a practicable and thorough manner.

An additional object of the invention, is to provide a simple mechanism characterized by few parts, and lending itself readily to the rapid handling of a large number of tires.

The invention comprises a supporting device which engages the inner periphery of a tire so as to cause the walls to collapse and also prevent twisting of the tire At the.

same time, provision is made for opening the tire valve, the mechanism being preferably applied in conjunction with suction means for drawing air from the interior of the tire. One form of the mechanism includes a plurality of members pivotally mounted upon a carrier, and adapted to be expanded by dropping downwardly and outwardly from gravity, against the inner periphery of a surrounding pneumatic tube.

A further important part of the invention lies in providing adequate, simple mechanism for maintaining the walls of the tire sufliciently spaced at the valve to prevent closing the outlet opening by the opposite wall of the tire.

To these and other ends the invention consists in certain other details and combinations of parts as will be hereinafter more fully described and pointed out in the claims at the end of the specification.

,Figure 1 is a. side elevation, showing the Fig. 3 is a sectional view on line 3-3 of.

Fig. l.

The invention is in the nature of an improvement of the construction embodied in application Serial No 208,336, filed December 21, 1917, and is shown applied to a mechan sm of the same general type as the aforesaid application. A designates a central holder which is rotatively mounted and carries a series of tire supports in the form of. tubes B. The latter are connected through theholder A with a common suctron pipe C,= and at their outer ends carrysuitableprovision for receiving a tire and automatically opening the valve therein, similarly tothe application already mentioned.

The tube or support B-is provided with Patented Jan. 31, 1922;

anadditional support for the tire, preferably in the form of expansible means adapted to be forced against the innerperiphery. In the illustrated embodiment, the

tube B is provided with a carrier or upright D, and pivoted to thelower end of the latter is a plurality of outwardly movable. supporting members or armsE. .These are preferably pivoted at the common point-F, and

adapted to fall by gravity to their outermost or expanded position, as shown at the right of Fig. l, to expand the tire. The arms E carry uards e which limit sidewise movement of t e tire and prevent its twisting. The supporting members or arms E need not necessarily be pivoted as shown, since. other arrangements may be utilized, permitting of an outward or expansive action against the inner periphery of the tire to engage the latter and hold it in position. The means just described forms a substantial holder for the tire, in addition to the.

support which co-operates with its valve to takes place, the expansible support acts to partially force the air from the interior through the open valve; 'This, of course,

hold it open, and while the latter action is only supplemental to the work of the suction means previously mentioned.

:Means are also proyided for manually operating thesupporting members E and v Stops M and N are provided which limit for holding them in their extreme positions, and to accomplish this, the levers G are provided, pivoted to the arms E at H, and

pivoted to each other at I. J designates a control lever which is pivoted to the carrier at K, and pivotally connected with the links G at the point I. The lever J, together with the expansible arms E, is held in its normal or contracted position by means of a spring latch L. engaging over the upper edge of the lever. By forcing the latter upwardly, against the pressure of the latch L, the parts are, disengaged and the weight of the arms E is suflicient to move them by gravity to the expanded position shown at the right of Fig. 1, the normal or contracted position being illustrated at the left of said figure.

movement of the lever J in opposite direc tions, while 0 is a spring finger fixedly attached to the carrier D and arranged to abut against the side of the lever J and steady the parts, to prevent undue chatter or looseness, when the parts are contracted, as atthe left ofFig. 1. The arms E are preferably of such length as to extend over the frame P to the center of the latter, when contracted, so that when they are expanded,

. spreader arms 9, which co-operate with the tire on opposite sides of the -valve stem. 6 designated a guide and stop member for directing the downward movement of the bar Q. The operative position of the support is shown in full lines, while the dotted lines of Fig. 1 indicate its position when out of operation and thrown upwardly above the central holder A.

lVhile the invention is described herein I with reference to a more or less particular mg arranged inside the tire and expansible against the inner periphery to hold the tire during deflation and havinga recess to receive a tire valve.

2. A pneumatic tire deflating mechanism consisting of a support on which a tire canmeans for holding the tire valve open during deflation.

4. A pneumatic tire deflating mechanism consisting of expansible means embodying a carrier and a plurality of supporting members therein adapted to engage the inner periphery of a tire, said members. when in normal position, supporting the tire uncollapsed and actuated outwardly by gravity, when released, to hold the tire during deflation.

5. A pneumatic tire deflating mechanism consisting of expansible means embodying a carrier and a plurality of supporting arms pivoted at the bottom of the carrier and actuated outwardly by gravity against the inner periphery of a tire to hold it during deflation, and means acting to hold the arms in their innermost contracted position.

'6. A pneumatic tire deflating mechanism consisting of a rotary holder, a series of tire supports on the holder, and common suction means communicating with each tire support and adapted to co-operate with a tire valve, each tire support including expansible means embodying a plurality of supporting members adapted when expanded to engage the inner periphery of a tire to cause its collapse."

7. A pneumatic tire deflating mechanism accordin to claim 6, in which said supporting mem )ers are pivoted at the bottom of a carrier, and actuated outwardly by gravity.

8. A pneumatic tire deflating mechanism consisting of a central rotary holder,a series of supports in the holder, each adapted to receive a tire, and spreading devices piv oted on the central holder and co-operating with the tires on the supports.

9. A pneumatic tire deflating mechanism consisting of a central rotary holder, a series of supports on the holder, each adapted to receive a pneumatic tire, a series of rods pivoted on the central holder, and spreader arms mounted at the outer end of each rod "for co-operation with a tire on the corresponding support.

10. A pneumatic tire deflating mechanism consisting of a rotary series of tire supports, and tire spreading devices pivoted independently of said supports and movable into and out of oo operative relationship with tires on the supports.

11. A pneumatic tire deflating mechanism 130.

consisting of expansible means embodying a movement ofthe lever in opposite directions, carrier and a plurality of supporting arms and a latch cooperating with the lever and pivoted at the bottom of the carrier and ac- 'acting to hold the parts in contracted rela- 10 tuated outwardly by gravity against the tionship.

inner periphery of a tire, links pivoted to the In Witness whereof, vI have hereunto arms, a control lever pivoted to said links signed my name. i

and to the carrier, stops for limiting the HENRY KRAFT. 

